Index. 
1007 
Smyth (Prof. C. Piazzi), Note on the 
little b group of lines in the Solar 
Spectrum, and the new College 
Spectroscope, 225. 
Micrometrical Measures of 
Gaseous Spectra, 696. 
Socotra. — Diagnoses plantarum nov- 
arum Phaiierogamarum Socotrensium, 
&c., quas elaboravit Prof. Bayley 
Balfour, Pars III., 76, 402. 
SolanaceiB of Socotra, 83. 
Solution, its Nature, 47 ; on the 
relative Electro-Chemical Positions 
of Iron, Steel, &c. , in Sea Water and 
other Solutions, 47. 
Spectra (Gaseous), Micrometrical 
Measures of, by Prof. C. Piazzi 
Smyth, 696. 
Spectrum. — Note on the little b group 
of lines in the Solar Spectrum, and 
the new College Spectroscope, by 
Prof. Piazzi Smyth, 225. 
Statistics, Scottish Vital, by George 
Seton, advocate, 619. 
StichocoUjle nephropis, a new Trematode, 
619. 
Sulphuretted Hydrogen Water, Method 
for Preserving, 140. 
Suu. — On a Green Sun and associated 
Phenomena, by Prof. Michie Smith, 
755. 
Sunsets. — The Remarkable Sunsets, by 
John Aitken, 448, 647. 
Superficies. — Metodo di dedurre una 
superficie da una figura piana, dal 
Professor L. Cremona, 599. 
System of Points, Quaternion Expres- 
sion for the Displacements of, by M. 
le Docteur Gustave Plarr, 151. 
Tables requisite for Decimal Sub-divi- 
sions in Astronomy and Navigation, 
by Edward Sang, LL. D., 533. 
Tait (Professor P. G. ) on the Laws of 
Motion, Part I., 8. 
Note on Compressibility of 
Water, 45. 
Further Remarks on the Mirage- 
Problem, 98. 
On the Thermo-Electric Posi- 
tions of Pure Rhodium and Iridium, 
136. 
On the Thermo-Electric Posi- 
tion of Pure Cobalt, 141. 
Direct Observations of ■ the 
Effect of Pressure on the Maximum 
Density Point of Water, 192. 
Further Note on the Maximum 
Density Point of Water, 226. 
Further Note on the Com- 
pressibility of Water, 757. 
Tait (Prof. P. G.) on Surface Emis- 
sivity, 230. 
On the Proofs of Proportionality 
of Emissive and Absorptive Power, 231. 
On Radiation, 531. 
On an Equation in Quaternion 
Differences, 561. 
On Vortex Motion, 562. 
On Knots, Part 11., 647. 
Note on Reference Frames, 743. 
— On a Special Class of Partitions 
755. 
Tanakadate (A.), An Electro-Magnetic 
Declinometer, 544. 
Teape (Dr), on the Semitic and Greek 
Article, 47. 
Temperature, Periodic Variation of, in 
Tidal B'lsins, by Hugh Robert Mill, 
B.Sc., 927. 
Tenure of Liind in Scotland, by G. 
Auldjo Jamieson, 99 ; Celtic Tenure, 
103 ; Saxon Tenure, 108. 
Therapeutics (Cellular), by Patrick 
Geddes, 289. 
Thermometer Screens, 661 ; Wet Bulb 
Observations, 665 ; on the Temper- 
ature of different sized Bodies, 668— 
Part II., 676; Radiation Thermo- 
meters, 682 ; Thermometers with 
Protected Bulbs, 682 ; Sling Ther- 
mometers, 689 ; Temperature with- 
out Screens, 691 ; Night Tempera- 
ture.s, 694, by Mr John Aitken. 
Thomson (Prof. James), on the Law of 
Inertia ; the Principle of Chrono- 
metry ; and the Principle of Absolute 
Clinural Rest, and of Absolute Rota- 
tion, 568. 
Problem on Point- Motions 
for which a Reference Frame can so 
exist as to have the Motions of the 
Points, relative to it, Rectilineal and 
mutually Proportional, 730. 
Thomson (Sir AVilliam), Oscillations 
and Waves in an Adynamic Gyros- 
tatic System, 128. 
On Gyrostatics, 128 ; on a 
Dynamical Theory of Dispersion, 128. 
On Efficiency of Clothing for 
maintaining Temperature, 568. 
On Gauss’s Method for deter- 
mining the Horizontal Comimnent of 
Terrestrial Magnetic Force and Mag- 
netic Moments, 578. 
ThymelEeacese of Socotra, 92. 
Tidal Basins, Periodic Variation of 
Temperature in, by Hugh Robert 
Mill, B.Sc., 927. 
Traill (Dr), Notes on Boulders in the 
Orkneys, 210. 
Trees (Drifted) in Beds of Sand and 
